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The ornamental design for a spring clamp, as shown. |
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FIG. 1 is a front left perspective view of a spring clamp showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG 6 is a front view thereof; and,
FIG. 7 is a rear view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 08 1993 | SORENSEN, JOSEPH A | PETERSEN MANUFACTURING CO INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 006610 | /0200 | |
| Jun 10 1993 | Petersen Manufacturing Co. Inc. | (assignment on the face of the patent) | / | |||
| Sep 24 2002 | PETERSEN MANUFACTURING CO , INC | Irwin Industrial Tool Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 013417 | /0506 |
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